The Cretaceous of Afghanistan is marked by great facies diversity. The evolution of Cretaceous basins is part of a complex accretionary history involving three distinct tectonic units namely the Asian ( Russian) Block separated from the Indian plate by a rather well defined transcurrent fault (Chaman-Nuski). The southwestern component is represented by the Iran-Afghanistan plate. The Lower Cretaceous of the Asian Block is represented by the Red-Grit Series which is conformable to the underlying Upper Jurassic sequences. The transition is marked by evaporitic facies dominated by salt, gypsum and marl deposits. In south Afghanistan volcanic rocks occur at Farah, with the emplacement of plutonics in west-central Afghanistan. The Upper Cretaceous of north Afghanistan is marked by richly fossiliferous, limestone-domi-nated sequences. The Upper Cretaceous of southern Afghanistan is marked by strong ophiolitic magmatism. The Cretaceous of Afghanistan is marked by great facies diversity. The evolution of Cretaceous basins is part of a complex accretionary history involving three distinct tectonic units specifically the Asian (Russian) Block separated from the Indian plate by a rather well defined transcurrent fault (Chaman- The southwestern component is represented by the Iran-Afghanistan plate. The Lower Cretaceous of the Asian Block is represented by the Red-Grit Series which is conformable to the underlying Upper Jurassic sequences. The transition is marked by evaporitic facies dominated by salt , gypsum and marl deposits. In south Afghanistan volcanic rocks occur at Farah, with the emplacement of plutonics in west-central Afghanistan. The Upper Cretaceous of north Afghanistan is marked by richly fossiliferous, limestone-domi-nated sequences. The Upper Cretaceous of southern Afghanistan is marked by strong ophiolitic magmatism.